#include<stdio.h>
int main()
{
	int a = 0;
	printf("%zd\n", sizeof(int));
	printf("%zd\n", sizeof a);
	printf("%zd\n", sizeof(3 + 5));
	int b = 6/4;
	float c = 6.0/4;
	printf("%d %f\n", b, c);
	int score = 5;
	score = (score / 2.0) * 100;
	printf("%d\n", score);
	return 0;
}